void SystemInit(void)

 {

     stc_clk_systickcfg_t stcCfg;

     // TODO load trim from flash

     //hcr 4MHz manual trim.

     Clk_SetRCHFreq(ClkFreq4Mhz);//默认内部RCH  4M

     Clk_Enable(ClkRCH, TRUE);

     SystemCoreClockUpdate();

     DDL_ZERO_STRUCT(stcCfg);

     stcCfg.bNoRef = TRUE;

     stcCfg.u32LoadVal = 0xFFFFFF;

     Clk_SysTickConfig(&stcCfg);

 }

int32_t main(void)

{

    //GPIO输出

    //初始化外部GPIO P03为输出、上拉、开漏，P03端口外接LED3

    Gpio_InitIOExt(, , GpioDirOut, TRUE, FALSE, TRUE, FALSE);

        Gpio_InitIOExt(, , GpioDirOut, TRUE, FALSE, TRUE, FALSE);

    while ()

    {

        //输出高电平，LED3灭

        Gpio_SetIO(, , TRUE);

        //delay1ms(1000);

        //输出低电平，LED3亮

        Gpio_SetIO(, , FALSE);

        //delay1ms(1000);

    }

}

/**

 *******************************************************************************

 ** \brief   GPIO 初始化2

 **

 ** \param   [in]  u8Port             IO Port口

 ** \param   [in]  u8Pin              IO Pin脚

 ** \param   [in]  enDir              IO 方向（输入或输出）

 ** \param   [in]  bPullup            上拉开关

 ** \param   [in]  bPulldown          下拉开关

 ** \param   [in]  bOdr               开漏开关

 ** \param   [in]  bDrive             驱动能力

 **                                   0 = 高

 **                                   1 = 低

 ** \retval     Ok         设置成功

 **             其他值     设置失败

 ******************************************************************************/

en_result_t Gpio_InitIOExt(uint8_t u8Port, uint8_t u8Pin,

                           en_gpio_dir_t enDir,

                           boolean_t bPullup,

                           boolean_t bPulldown,

                           boolean_t bOdr,

                           boolean_t bDrive)

{

    //force open clock

    M0P_CLOCK->PERI_CLKEN_f.GPIO = ;

    //force set mode, ignore result.

    Gpio_SetAnalog(u8Port, u8Pin, FALSE);

    //fn

    *((volatile uint32_t *)((uint32_t)&M0P_GPIO->P01_SEL + u8Port * GPIO_GPSZ -  + u8Pin * )) = ;

    //ADS

    //setBit((uint32_t)&M0P_GPIO->ADS0 + u8Port * GPIO_GPSZ, u8Pin, 0);

    //dir

    setBit((uint32_t)&M0P_GPIO->P0DIR + u8Port * GPIO_GPSZ, u8Pin, enDir);

    //dr

    setBit((uint32_t)&M0P_GPIO->P0DR + u8Port * GPIO_GPSZ, u8Pin, bDrive);

    setBit((uint32_t)&M0P_GPIO->P0PU + u8Port * GPIO_GPSZ, u8Pin, bPullup);

    setBit((uint32_t)&M0P_GPIO->P0PD + u8Port * GPIO_GPSZ, u8Pin, bPulldown);

    setBit((uint32_t)&M0P_GPIO->P0OD + u8Port * GPIO_GPSZ, u8Pin, bOdr);

    return Ok;

}

/**

 *******************************************************************************

 ** \brief GPIO IO输出值设定

 **

 ** \param [in]  u8Port          IO Port口

 ** \param [in]  u8Pin           IO Pin脚

 ** \param [in]  bVal            输出电平高低

 **

 ** \retval Ok         设置成功

 **         其他值     设置失败

 ******************************************************************************/

void Gpio_SetIO(uint8_t u8Port, uint8_t u8Pin, boolean_t bVal)

{

    bVal = !!bVal;

    setBit((uint32_t)&M0P_GPIO->P0OUT + u8Port * GPIO_GPSZ, u8Pin, bVal);

}